排序系统中的粒子。
using UnityEngine;
using UnityEditor;
using System.Collections;
public class ExampleClass : MonoBehaviour {
private ParticleSystem ps;
private ParticleSystemRenderer psr;
public ParticleSystemSortMode sortMode;
void Start() {
ps = GetComponent<ParticleSystem>();
psr = GetComponent<ParticleSystemRenderer>();
// set a slow start speed and high emission rate, to cause more overlap, to show sorting
var main = ps.main;
main.startSpeedMultiplier = 0.2f;
var emission = ps.emission;
emission.rateOverTimeMultiplier = 100.0f;
// set color over life, so we can see the sorting more easily
var colorOverLifetime = ps.colorOverLifetime;
colorOverLifetime.enabled = true;
Gradient gradient = new Gradient();
gradient.SetKeys(
new GradientColorKey[] { new GradientColorKey(Color.green, 0.0f), new GradientColorKey(Color.red, 1.0f) },
new GradientAlphaKey[] { new GradientAlphaKey(1.0f, 0.0f), new GradientAlphaKey(1.0f, 1.0f) }
);
colorOverLifetime.color = new ParticleSystem.MinMaxGradient(gradient);
}
void Update() {
psr.sortMode = sortMode;
}
void OnGUI() {
sortMode = (ParticleSystemSortMode)GUI.SelectionGrid(new Rect(25, 25, 900, 30), (int)sortMode, new GUIContent[] { new GUIContent("None"), new GUIContent("Distance"), new GUIContent("OldestInFront"), new GUIContent("YoungestInFront") }, 4);
}
}